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Dafizilla Table2Clipboard

Mozilla applications allow to select rows and columns from a table simply pressing Control key and picking rows/columns with left mouse button.
The selection can be copied to clipboard but the original table disposition is lost making ugly results wh...

Rated 5 out of 5 stars (63)
18,886 users

Cookie Exporter

Exports all cookies in IE manner.
Makes a Netscape standard cookies.txt file.
Very useful for WGET --load-cookies option.

Rated 5 out of 5 stars (13)
3,290 users

Config Descriptions No Restart

Shows source comments for advanced application preferences in about:config

Rated 5 out of 5 stars (19)
2,404 users

EmotiConverter

Post your best emoticons of the easiest and fastest way.

Rated 5 out of 5 stars (33)
517 users

Live HTTP Headers

View HTTP headers of a page and while browsing.

Rated 4 out of 5 stars (156)
166,661 users

BBCode

Adds BBCode, HTML, XHTML & Symbols formatting to the context menu for forums.

Rated 4 out of 5 stars (68)
1,153 users

Linkification

Converts text links into genuine, clickable links...

Rated 4 out of 5 stars (307)
30,207 users

MR Tech Disable XPI Install Delay

Disables default delay when installing...

Rated 5 out of 5 stars (16)
289 users

HttpFox

An HTTP analyzer addon for Firefox

Rated 4 out of 5 stars (161)
94,550 users

Click-to-Play Manager No Restart

Manages the Click-to-Play domain whitelist.

Rated 5 out of 5 stars (10)
3,852 users

Re-Pagination No Restart

See more search results etc. on one page, concatenating several pages together...

Rated 4 out of 5 stars (43)
4,187 users

RequestPolicy

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Rated 4 out of 5 stars (226)
102,336 users

Stylish

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.

Rated 4 out of 5 stars (746)
659,408 users

Add-ons Manager - Version Number No Restart

Restores add-on version number inside Add-on Manager for latest builds of Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (5)
620 users

FoxyProxy Standard

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Rated 4 out of 5 stars (342)
290,545 users

SixOrNot No Restart

IP address information for Firefox. SixOrNot is an icon-based display of IPv6 availability and utilisation also providing a listing of domain names and IP addresses involved in loading web pages.

Rated 5 out of 5 stars (12)
3,334 users

No More Install Delay No Restart

UPDATE: XPI delay has been removed in Firefox 40!

Disable the install delay in Firefox. New 2.0 version now includes GreaseMonkey scripts!

Unlike similar addons, this works on Firefox 4 and beyond.

Rated 5 out of 5 stars (14)
1,042 users

MR Tech Toolkit

(Formerly Local Install) The primary goal of this extension is to provide the tools needed to install and manage extensions and themes locally and tons of other features.

Note: With Toolkit 6.0 Auto Archiving is fully working in Firefox 2.0 and temp...

Rated 4 out of 5 stars (143)
50,553 users

InspectorWidget

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

Rated 5 out of 5 stars (6)
1,223 users

JSONovich No Restart

Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

Rated 4 out of 5 stars (33)
9,129 users